NEUROANATOMY• Study of morphological aspect of nervous system• NERVOUS SYSTEM

• Central nervous system (CNS)• Peripheral nervous system (PNS)

CNS•Brain

•Spinal cord

PARTS OF BRAIN

• Telencephalon – cerebrum• Diencephalons – Thalamus

HypothalamusEpithalamusSubthalamus

• BRAINSTEM • MIDBRAIN• PONS• MEDULLA

• HIND BRAIN• PONS• MEDULLA• CEREBELLUM

STRUCTURAL COMPONANTS OF NERVOUS SYSTEM

1. Neurons2. Neuroglial cells3. Processes of 1&2

Synapse

BASIC STRUCTURAL ORGANISATION

GREY MATTER – CELL BODIES OF NEURONSDENDRITES (PART

CLOSE TO CELL)AXONS (PART CLOSE TO

CELL)WHITE MATTER – MYELINATED AXONS

NEUROGLIAL CELLS Blood vs. are seen in both

• GROUP OF NEURONS• NUCLEUS – CNS• GANGLION – PNS

• GROUP OF FIBERS• TRACT – CNS• NERVE – PNS

NUCLEI

• Cranial nerve nuclei• Others e.g. Olivary

nucleus, Red nucleus Basal nuclei etc.

TRACTS/ PATHWAYS

ASCENDING (SENSORY)

DESCENDING (MOTOR)

• MOTOR PATHWAYS • PYRAMIDAL

– CORTICOSPINAL– CORTICONUCLEAR

• EXTRAPYRAMIDAL

• SENSORY PATHWAYSInvolves various neurons to

reach main sensory area in brain

• CAVITY IN BRAIN - VENTRICLE

BLOOD SUPPLY

IMAGING TECHNIQUES

• Computerized tomography (CT)

• Magnetic resonant imaging (MRI)